Sewing-machine.



B.; CORNELY. SEWING MACHINE. APPLICION FILED JUNE 6,1913.

Patented May 22, 1917.

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ROBERT CORNELY, OF PARIS, FRANCE.

SEWING-MACHINE.

To all LU/wm t may concern.'

Be it known that I, ROBERT CORNELY, a

' citizen ofthe United States, and a resident of Paris, France, have invented a new and v useful Improvement in Sewing-lvfachinesf ,which is fully set forth in the following the friction wheel 14 is transmitted by' specification. a

The present invention relates to improvements in sewing, embroidering and like machines and has .for its object to provide means whereby thefeed of the material and its lateral displacement under the needle or needles are made dependent upon each other.

In the drawings which'represent an eX- ample only'of the invention, Figure 1 is an elevation, Fig. 2 a vertical section of Fig. l on line A-B, and Figs. 3 and'4are details .hereafter to be referredtd Cog wheel 1 of a' differential gearing 1, 2,

3 is provided. with a ratchet wheel 4 which is .driven'by the In'achineiin any suitable manner.V`v

Shaft 6 carries the feed roller 5 and'fis rotated by wheel 2 which carriestheplan- I etary wheels 2a, 2b, 2"., by ineans .of a key v7 which engages in a groove 8 of the shaft V6, and this feed of the'materi'al'takes place at eachr action of the pawl upon ratchet 4, but the stroke ofthat feed'is reduced'by the differential gearing to one half when wheel 37;'

remains stationary; when on the contrary wheelk 3 turns in v opposite vdirection of wheel 1, then the motion of wheel 2 which producing festoons, scallops, ,or embroid-4 eries, either automatically, or bythe operator. The toothed bars 10 and 11 engage from two opposite sides two toothed wheels 12 and 13l and cause them to turn upon a sleeve of a friction wheel `14 in such manner that they always rotate in opposite directions to each other. carries a curved lever 15 and 16 which by means of spiral springs draw the friction pawls 17 and 18 toward the foot of said levers 15 and 16. l l

In consequence of this opposed direction of rotation of these wheels 12 and 13, the

Specication of Letters Patent.

Each of these wheels 12 and 13' Patented May a2, 1917.

Applicationiled J une 6, 1913. Serial No. 772,099.

friction wheel 14 is always driven by thev one or the other of the friction levers 17 or 18 whilethe other returns backward so that every displacement of table 9 imparts a rotating motion to friction wheel 14 in one direction' only. This rotating motion of means of cog wheels 19 and 20 upon the lateral cog wheel 3 of the Vdifferential but in opposite directionV tothat of the driving wheel 1, thus retarding the rotation of wheel 2 which carries the planetary wheels and which at the same time rotates shaft 6 together with it-s feed roller 5.

'I he consequenceofthis is that the greater every displacement of the table 9 which carries the material the more the rotation of friction .wheel 14 and Vof. the regulating wheel 3 increases and the more the rotation of wheel 2 which Acarries the planetary wheels and of its feedy roller decreases.

PSince the directions of rotation `of the regulating cog wheel 3 and ofwheel 2 which carries the planetary wheels are the same and since, on account of the feed of. the

material, the feed roller 5 and wheel 2 have to overcome a greater resistance than said regulating wheel 3 withits friction wheel 14, it may happen that wheel 2 remains stationary and thatV the whole movement of the driving cog wheel 1 is applied to .wheel 3 so 'that friction. 'wheely 14 '.woul'dAV have a tendency of turning in a'dvance'ofv thefriction'levers` 17and E18 if. a stronger resistance than that ofi feedfroll'er- 5 was nt opposedto this.y

In the present. example., cogwheelI 3 'l is braked by l'itself vautomatically asl soon as it begins to transmit l ja, pressure' of driving wheel 1 upon friction wheel 14, in the following manner: f

' Cog wheel 19 which is secured upon cog wheel 3 would. then drive cog wheel 20 which is secured upon disk 21, which latter disk 21, by means of two pins 22 and 23 has a tendency of` pushing toward the eX- terior the ends v of two levers 26 and 27 pivoted near the center ofdisk 21 and-'provided with brakes 24 andv 25 which-thus exercise a pressure against the interior'surface vof a stationary sleeve 28. In order vthat friction wheel 14 remains always in the proper position with regard to the regulating wheel 3, said friction wheel 14 is p rovided withl borings 29 and 30` into which Lengage the pins v22 and 23 with alittle play of the material not only in fractions, butv also in Wholes or multiples, or to the contrary, Y

this displacement of table 9 can be added to the displacement of the feed when the regulating Wheel 3 isV rotated'in the same direction as drivingV Wheel 2 Which carries the planetary Wheels, in order to obtain special embroidery effects. `What I claim is l. In amachine of the character described,Y

a fabric feeding member adapted rto be dis- Vplaced laterally to the direction of feed,

means for operating said member to feed the fabric, and means ,controlled by the lateral displacement of said feeding member and controlling the feed operating means to vary the feed inversely as the lateral displacement.

2. In amachine of the character described, a fabric feeding roller adapted to be displaced laterally to the direction of feed, a dierential gear train for driving said roller comprising a drive gear, a driven gear and a feed Vregulating gear, and means respondingto the lateral movements of said feed roller for imparting rotation to said feed regulating gear.

3. In amachine of the character described, a fabric feeding roller adapted to be displaced laterally to the direction of feed, a differential gear train for driving said roller, and means responding to the lateral movements of said feed roller for controlling the movements of one member of said gear ti'ain.

4f. In amachine of the character described,

a fabric feeding roller adapted to be dis-VV placedV laterally to the direction 0f feed, a

differential gear train for driving 'said roller comprising a drive gear, aV driven gear Vand a feed regulating gear, means operated by the lateral movements of said rollerfor driving said feed regulating gear in one direction, and brake means for retarding the` rotation of the regulatingV gear When the re-VY a fabric feeding roller adapted to be displaced laterally to theY direction of feed, adifferential gear trainV for rotating VsaidY roller and including a Vfeed controlling gear, driving means for said `gear comprising a shaft operatively connected to said gear, a

clutch Wheel secured to-saidV shaft, a pair ofV pinions mounted loosely on said shaftY andV having yielding clutch connections With said j Wheel, and racks reciprocating' With said roller engagingrvsaid pinions to drive said Wheel and gear in one direction. Y f

6. In a machine of the character described,

a fabric feeding roller adapted to-be displaced laterally to the direction of feed, a differential gear train for rotating said roller and including a feed controlling gear, driving means for said gear comprising a shaft operatively connected to said gear, a-

clutch Wheel secured to said shaft, a pair of pinions mounted loosely onV said shaft and having yielding clutchconnections with said Wheel, racks reciprocating ivith said roller engaging said pinions to drive said Wheel and gear in one direction, and brakes for increasing the resistance offered by the regulating gear to-counterbalance that-of the driven Gear under abnormal resistances applied to t ie feed roller. Y Y

7. In a machine of the character described, a fabric feeding member adapted to be displaced laterally to the direction of feed,

means for operating said member to feedY the fabric, and means controlled bythe lateral displacementY of said feeding member to control the feed of said feeding member.

In testimony whereof I have signed this specification in the ing witnesses. o Y l I ROBERT CORN ELY.

Witnesses: i

Y HANsoN C. CoXE,

JOHN BAKER.

presence oftWo subsci`ibV Gopies of this patent may be obtained for five cents each, by addressing the-i Commissioner of Patents,

' Washingtomb. C. 

